Waterproof covering and process of making same



May 19, 1925. 1,53 7,950

L. KIRSCHBRAUN WATERPROOF COVERING AND PROCESS OF MAKING SAME Original Fi led Feb. 1, 1919 Orzzanvezz ZQZ @uzface Patented May 19, 1925.

UNITED STATES I I 1,537,950 PATENT OFFICE.

LESTER KIRSCHBR-AUN, or nv ANsToN, ILLINOIS.

WATERPROOF COVERING ANI) PROCESS OF MAKING SAME Application filed February 1, 1915?, Serial No. 274,496. Renewed October 2?, 1921. Serial N0. 51i,099.

To-qll whom it may concern:

Be it known that I, Lusrnn KmsoHnRAUN, a citizen of the United States, residing in the city of Evanston, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Waterproof Coverings and Processes of Making Same, of which the following is a specification.

This invention relates to the manufacture of waterproof coverings, and is especially adapted for use as an ornamental water: proof flooring, similar to printed linoleums;

' to provide a product of the above character in which the upper surface of the floor covering is suitably ornamented and in which,

the body portion is waterproof; to provide a product in which a water resisting sealing layer is interposed between the upper ornamentation and the body portion; to provide a process in which the above product is formed as a continuous and simultaneous operation, and, in general, to provide improvements of the character referred to.

In the manufacture of ornamental flooring felts, the body portion is made of paper felt saturated with black asphalt or bitumen. The colored ornamentation is painted over this saturated felt, and several layers of paint are required in order to prevent the black bitumen from discoloring the ornamentation. pensive, first, because a relatively thick layer of paint must be used, and, secondly, because each coat must be thoroughly dry be- .fore the next one is applied. The present invention obviates the above difiiculty. The

waterproof body portion and the sealing layer are formed simultaneously, and the ornamentation can then be applied with the minimum amount of paint.

The single figure of the drawing is a crosssectional ele-vational view-of the finished sheet.

The invention may becarried on as fol lows: I

An aqueous mixture of clay containing a sufiicient percentage of colloidal particles, or an analogous emulisfying agent, is first made. lVhile this mixture is in heatedcondition a binder, in liquid form, is added to the aqueous mixture and thoroughly dispersed therethrough so as to form an emulsion in which the emulsifying a nt and aqueous vehicle form the external p ase and the binder the internal phase. The binder may be either asphalt, linseed oil or other This process is slow and ex-' mixed in the ordinary beater, such as used in paper mills. In another beater paper stock, suitably sized, is formed in the ordinary way. The amount of size and character 1s varied with the end in view of producing a highly water-resistant paper. The two mlxtures are then run over a multiple cylinder machine so that the waterproof body portion is formed in a sheet with the waterresistant sized paper, forming a layer atfixed to the body portion. The sheet formed in this way, after being dried, is ready to receive a ground paint coat, and the ornamentation can then be applied. It is to be noted that in the formation of the above sheet as the water dries out of the body portion the emulsion is broken and the adhesive binder intimately unites with the fibre. Also that the body portion is permanently attachedto the sized outer layer portion. In certain cases, in order to obtain resiliency for the flooring, it may be desirable to add to the body portion comminuted cork or sawdust. This can be mixed with the fibre in the beater either before or after the matrix is added.

The applicant in this application is not claiming broadly the process of making emulsion, or the product produced thereby, or broadly covering the idea of mixing such emulsified product with fibre, the same being claimed in other co-pending applications of this applicant.

I claim as my invention:

l. A process of making an ornamental I waterproof covering, consisting in forming a mixture of fibre and a bituminous emulsi% fied matrix into a sheet, simultaneously forming sized paper stock intoan outer ply portion, bringing together the plies drying out the water and allowing the, bitumen to intimately unit with the fibre, andthe plies to intimately unite together, and then painting an ornamentation on the outer ply.

2. A process of making a waterproof sheet on a paper machine, consisting in sheeting a mixture of fibre and a bituminous emulsion, simultaneously forming sized paper stock into an outer ply portion, bringing to I structural characteristics of having gether the plies drying out the water and allowing the bitumen: to intimately unite with the fibrel and the plies to intimately unite together. 7

3. A waterproof sheet, consisting of multi le plies, comprising a body portion formed of fibre, emulsifying agent, an adhesive binder, and an outer portion formed ofsized paper stock, the two portions being intimately united and having the structure characteristics of being simultaneously formed.

' .4. A waterproof coveringv sheet, consisting of multiple plies, comprising a body-portion formed of fibre, emulsifying agent, and an adhesive binder, and an outer portion formed of sized paper stock, the-two portions being intimately united and havin the een simultaneously formed, and an ornamentation agaplied to the outer sheet portion.

5. watergroof covering sheet consisting of multiple p es comprising a body portion formed of fibre, an emulsifying agent, and a bituminous binder and an outer portion formed of paper stock, the two portions being intimately united and having the characteristics of being simultaneously formed.

6. A Waterproof covering sheet'consisting of multiple plies comprising a body portion formed of fibre, and an emulsifying agent,

a bituminous binder, an outer portion formed of paper stock, the two portions being intimately united and having the characteristics of having been simultaneously outer ortion.

formed and anornamentation applied to the waterproof covering consisting of multiple formed 0 fibre, an emulsifying agent and asphalt, and an outer portion formed of Flies comprising a body portion,

paper stock, the-two portions being intimatea fibrous stock into an outer ply portion, uniting the outer ply to one surface of the body portion to form a unitary structure, drying the sheet and allowing the bitumen to coalesce.

v1O. A waterproof sheet consisting of multiple plies comprising a body portion formed of fibre, emulsifying agent, an adhesive binder and comminuted resilient filler, and an outer portion formed of paper stock, the two portions being intimately united, and having the characteristics of being simultaneously formed.

LESTER KIRSCHBRAUN. 

